View Single Post
  #5  
Old 3rd July 2018
drmarkf's Avatar
drmarkf drmarkf is offline
Full member
 
Join Date: Aug 2008
Location: Cambridge, UK
Posts: 5,414
Thanks: 335
Thanked 475 Times in 399 Posts
Likes: 2,087
Liked 1,232 Times in 702 Posts
Re: m4/3 lenses for IR

Quote:
Originally Posted by Petrochemist View Post
I've used the Panny 14-42, 50-200 Olympus 9mm BCL & 17mm/2.8 for IR without any hot spot issues on my converted camera.
But I have seen hot spots with the 14-42 when shooting IR on a non-converted camera, So far at least the 50-200 has been free of hot spots with the standard camera.
I've also seen hotspots with c-mount lenses but possibly this was down to the extension tubes I was using.

I think hot spots are less of a problem with false colour IR (it's a problem with the IR part of the image) but chromatic aberration can be an issue with wider wavelength images.
Interesting, thanks.
__________________
Regards,
Mark

------------------------------
http://www.microcontrast.com
Too much Oly gear.
Panasonic 12-32, 12-35, 15. Laowa 7.5.
Assorted legacy lenses, plus a Fuji X70 & a Sony A7S.
Reply With Quote